Gypsum industry news

US: The Construction & Demolition Recycling Association (CDRA) has formed a Gypsum Recycling Committee. It intends to work with key stakeholders in gypsum recycling to improve the recovery rate. Terry Weaver, the president of USA Gypsum, will be the first chair of the committee.

The committee will be comprised of companies involved in each step of recovering gypsum wallboard, including the manufacturers, the Gypsum Association, contractors, processors and end users. Initial actions will include: creating a wallboard diversion policy; developing end product specifications; creating best management practices for contractors and processors; working with drywall companies to set post-recycled content for new wallboard; updating the CDRA’s current Gypsum Recycling Protocol to reflect these actions; promoting that recyclers must be third-party certified using a program developed to an ISO level; and defining specifications for other end products made from recycled wallboard.

US: The US Geological Survey (USGS) reports that 17Mt of gypsum was mined in the first three quarters of 2021, a rise of 9% year-on-year from 15.6Mt in the same period in 2020. Imports grew by 14% to 5Mt but synthetic gypsum supply declined by 10% to 9.75Mt. Total gypsum board product sales grew by 8% to 1.94Bnm2 from 1.80Bnm2.

Spain: Knauf has received a 30 year extension to its quarrying permit supporting its Escuzar wallboard plant in Granada. The company also plans to increase production capacity at the unit, according to Europa Press. The plant was established in 2008 and it has a capacity of 50Mm²/yr.

New Zealand: University of Canterbury (UC) student Andy (Minhong) Park has developed a biocomposite wall panel that uses seaweed or algae as a bio-filler. Preliminary testing indicates the plasterboard-style product offers similar fire performance to other commercially available products. Using seaweed also provides moisture control properties. The finished seaweed plasterboard product has a glossy marble surface, coloured green, red or brown depending on the type of seaweed used.

“Seaweed is fast-growing at 0.5m/day and is capable of sequestering around 173Mt/yr. It’s easy to cultivate and can be farmed offshore, not competing for farmable land with other bio-based materials, making it an attractive, low-cost farming commodity. Because seaweed can absorb carbon underwater, large wall-panel manufacturers could employ seaweed farming as a carbon offset by growing it,” said Park.

The 12 week project was supervised by UC Product Design Senior Lecturer Dr Tim Huber in collaboration with UC Fire Engineering Lecturer Dr Dennis Pau. While still in the early stages of research, design and testing, the team is working with the UC’s Research and Innovation team to develop a commercialisation plan, and Kaiārahi Rangahau Māori to identify suitable species of seaweed for product development and marine agriculture. The project recently won the UC Innovation Jumpstart Greatest Commercial Potential Award and a US$13,000 prize.

Tunisia: Elizabeth Knauf has expressed Knauf’s interest in growing its production capacity for the local market and export. The group president of the board of directors met with Prime Minister Najla Bouden in mid-January 2022, according to the Agence Tunis Afrique Presse. Bouden praised the success of Knauf Tunisia’s training centres at Tataouine and Meknassy (Sidi Bouzid). The group acquired Plâtres Tunisiens in 2004 and operates a plaster plant at Meknassy.